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drm/msm/dpu: Fix pointer dereferenced before checking

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The phys_enc->wb_idx is dereferencing before null checking, so move
it after checking.

Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Fixes: d7d0e73f7d ("drm/msm/dpu: introduce the dpu_encoder_phys_* for
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/487606/
Link: https://lore.kernel.org/r/1653877196-23114-1-git-send-email-baihaowen@meizu.com
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
This commit is contained in:
Haowen Bai 2022-05-30 10:19:55 +08:00 committed by Abhinav Kumar
parent fb0af2daaa
commit 8caad14e72
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
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@ -574,11 +574,11 @@ static void dpu_encoder_phys_wb_disable(struct dpu_encoder_phys *phys_enc)
*/
static void dpu_encoder_phys_wb_destroy(struct dpu_encoder_phys *phys_enc)
{
DPU_DEBUG("[wb:%d]\n", phys_enc->wb_idx - WB_0);
if (!phys_enc)
return;
DPU_DEBUG("[wb:%d]\n", phys_enc->wb_idx - WB_0);
kfree(phys_enc);
}